Scroll to the Apps section and select . Change it from Standard Limit to At most 2 processes .
If you are fine with apps restarting when you switch to them (saving RAM), enable this.
when you try to toggle specific developer settings (like USB Debugging). Support - unifiTV | Unifi TV
: A notification will appear saying, "You are now a developer!".
While standard Android TV devices let you activate these settings freely, certain firmware versions of the Telekom Malaysia (TM) unifi Plus Box restrict access behind an administrative password or modified build parameters to maintain ecosystem security.
It sounds like you're trying to access on a Unifi TV box (like the Unifi Plus Box or Android TV device) to possibly manage or view passwords, or improve performance.